Navigation Rules is a reference application for iOS providing the full text of maritime collision regulations for boaters and professionals.
Product velocity
Dormant
Daily rank 🇺🇸
#59
Reference · paid
Sentiment
4.8
382 reviews
Nemesis
Fragmented field
The App DNA
What makes this app unique?
Users hire this app to ensure regulatory compliance and pass maritime certification exams via a reliable, offline-accessible manual.
For Boaters and maritime professionals who require offline access to the International Regulations for Preventing Collisions at Sea.
What does it look like?
Key features
Complete text of the International Regulations for Preventing Collisions at Sea, 1972.
Annotated table of contents and keyword search functionality.
Customizable list for quick access to maritime rules.
In-app function to share specific rule pages via email.
How much does it cost?
Paid model anchored at $3.99, targeting users requiring a static, reliable, and offline-accessible regulatory reference.
Velocity
Dormant developmentShow more...
5 versions in history. Development pace: zombie.
Who built it?
Calculated Industries
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What do users think recently?
Recent user voice shows a thrilled sentiment. Users appreciate navigation rules reference material provides essential study support for maritime certification exams.
How are ratings & reviews evolving?
What users say, by theme
- Navigation rules reference material provides essential study support for maritime certification exams
- Lack of interactive testing features limits the utility of the app for self-assessment
47 of 47 recent reviews analyzed · high confidence · Thrilled overall
Read the full review analysisUnlock 1 user request, each backed by review evidence.
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Competitive landscape for Navigation Rules
How's the Reference market?
Navigation Rules holds the #43 position in the US Reference category, yet rank volatility in international markets suggests inconsistent discovery. The static reference model faces pressure from high-cadence, gamified test-prep apps that are capturing the exam-focused segment.
Read the market outlookThe rivals identified
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Key takeaways for Navigation Rules
Where is it heading?
The maritime reference market is consolidating around tools that offer both regulatory data and active study support. Navigation Rules remains stable due to its accuracy, but the absence of feature expansion leaves it exposed to competitors that offer gamified learning, so the PM must shift to an interactive model to retain the certification-seeking user base.
- The lack of feature updates over the last three years allows agile competitors to capture the exam-prep segment, which erodes the app's long-term market relevance.
- High user satisfaction regarding the accuracy of regulatory content provides a stable foundation for introducing interactive assessment tools to increase daily engagement.
The SWOT
- Regulatory compliance status functions as a brand moat for professional mariners
- Offline-first architecture ensures utility in remote maritime environments
- Integrate flashcard modules for signal recognition
- Add practice exams to increase daily active usage
Next best moves
Ship interactive quiz module because user reviews flag lack of assessment as top complaint → increase session frequency
+ 1 more prioritized moveThe counter-intuitive read
The app's maintenance-mode status is a strategic liability…
Read the full takeFeature gaps
Gamified assessment modules (available in CDL Test Prep 2026 but absent here) +1
Since the last report: The product remains in maintenance mode, but new sentiment and competitive data clarify its vulnerability to gamified test-prep alternatives.
Bottom line
Navigation Rules maintains a high-intent user base through accurate regulatory content, but the lack of interactive study tools creates a vulnerability to gamified competitors, so the PM should prioritize a quiz module to defend the exam-prep segment.
Unlock 3 critical frictions, 3 market threats, 1 more prioritized move and the analyst’s take.
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